The OWA Latency value in the Diagnostic console is very high (4225690)

When viewing the Diagnostic Console, the OWA Latency value is very high

The OWA Latency is determined by using the MSExchange OWA\Average Response Time perfmon counter. This could indicate an issue with OWA Latency or an issue with the perfmon counter.

The Diagnostic console reads the data from the perfmon counter on the Exchange server. Confirm the data shown in the console is the same as what is provided by perfmon by opening perfmon from the Spotlight on Messaging Server, connecting to the Exchange server and viewing the counter:

If the Spotlight server is Windows Server 2008 or later:

1. Click Start | Run
2. Type perfmon and hit Enter
3. When Perfmon has opened, select Performance Monitor and then click the + button on the tool bar select System Monitor and click the + button on the tool bar if the Spotlight server is on a version of Windows earlier than Windows Server 2008
4. Enter the name of the Exchange server in the dropdown box in the format: \\servername
5. In the list of counters locate MSExchange OWA and expand it
6. Select Average Response Time and click the Add>> button
7. Click OK

If the Spotlight server is Windows Server 2003 or earlier:

1. Click Start | Run
2. Type perfmon and hit Enter
3. When Perfmon has opened, select System Monitor and click the + button on the tool bar
4. Enter the name of the Exchange server in the first dropdown box in the format: \\servername\
5. In the second dropdown box select MSExchange OWA
6. Select Average Response Time from the list of counters and click the Add button
7. Click Close

Review the output shown in perfmon. If the value is the same as what is shown in the Diagnostic console then the issue is either with the OWA Latency or the perfmon counter. Please contact Microsoft to troubleshoot further.